mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-26 06:18:59 +00:00
b84f8fb55b
Some of these are allocated upon initialization of the intrinsics, and some lazily, but in neither case the getters actually return a nullptr. This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has an `operator T&()`), and also has the interesting side effect of forcing us to explicitly use the FunctionObject& overload of call(), as passing a NonnullGCPtr is ambigous - it could implicitly be turned into a Value _or_ a FunctionObject& (so we have to dereference manually).
53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
|
|
#include <LibJS/Runtime/FunctionConstructor.h>
|
|
#include <LibJS/Runtime/GeneratorFunctionConstructor.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
|
|
namespace JS {
|
|
|
|
GeneratorFunctionConstructor::GeneratorFunctionConstructor(Realm& realm)
|
|
: NativeFunction(static_cast<Object&>(realm.intrinsics().function_constructor()))
|
|
{
|
|
}
|
|
|
|
ThrowCompletionOr<void> GeneratorFunctionConstructor::initialize(Realm& realm)
|
|
{
|
|
auto& vm = this->vm();
|
|
MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
|
|
|
|
// 27.3.2.1 GeneratorFunction.length, https://tc39.es/ecma262/#sec-generatorfunction.length
|
|
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
|
|
// 27.3.2.2 GeneratorFunction.prototype, https://tc39.es/ecma262/#sec-generatorfunction.length
|
|
define_direct_property(vm.names.prototype, realm.intrinsics().generator_function_prototype(), 0);
|
|
|
|
return {};
|
|
}
|
|
|
|
// 27.3.1.1 GeneratorFunction ( p1, p2, … , pn, body ), https://tc39.es/ecma262/#sec-generatorfunction
|
|
ThrowCompletionOr<Value> GeneratorFunctionConstructor::call()
|
|
{
|
|
return TRY(construct(*this));
|
|
}
|
|
|
|
// 27.3.1.1 GeneratorFunction ( p1, p2, … , pn, body ), https://tc39.es/ecma262/#sec-generatorfunction
|
|
ThrowCompletionOr<NonnullGCPtr<Object>> GeneratorFunctionConstructor::construct(FunctionObject& new_target)
|
|
{
|
|
auto& vm = this->vm();
|
|
|
|
// 1. Let C be the active function object.
|
|
auto* constructor = vm.active_function_object();
|
|
|
|
// 2. Let args be the argumentsList that was passed to this function by [[Call]] or [[Construct]].
|
|
auto& args = vm.running_execution_context().arguments;
|
|
|
|
// 3. Return ? CreateDynamicFunction(C, NewTarget, generator, args).
|
|
return *TRY(FunctionConstructor::create_dynamic_function(vm, *constructor, &new_target, FunctionKind::Generator, args));
|
|
}
|
|
|
|
}
|